Skip to main content
Log in

Morphine induced saccharin aversion in α-methyltyrosine pretreated rats

  • Published:
Psychopharmacologia Aims and scope Submit manuscript

Abstract

Rats pretreated with l-α-methyltyrosine (AMT) and then given pairings of saccharin drinking and morphine infusion subsequently showed a reduced preference for saccharin over water, when compared with control rats. Control conditions were AMT pretreatment with saccharin-saline pairings, saline pretreatment with saccharin-morphine pairings, and saline pretreatment with saccharin-saline pairings. A second experiment also showed significantly greater saccharin aversion with morphine-infused, AMT-pretreated rats than with saline-infused, AMT-pretreated rats although the morphine dosage was lower than that used in Experiment 1. These results suggest that morphine is aversive to rats that have been treated with AMT.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  • Babbini, M., Davis, W. M.: Time-dosage relationships in the locomotor activity effects of morphine after acute or repeated administration. Brit. J. Pharmacol. 46, 213–224 (1972).

    Google Scholar 

  • Berger, B. D.: Conditioning of food aversion by psychoactive drugs. J. comp. physiol. Psychol. 81, 21–26 (1972).

    Google Scholar 

  • Brackbill, R. M., Rosenbush, S. N., Brookshire, K. H.: Acquisition and retention of conditioned taste aversion as a function of the taste quality of the CS. Learning and Motivation 2, 341–350 (1971).

    Google Scholar 

  • Bradley, R. M., Mistretta, C. M.: Intravascular taste in rats as demonstrated by conditioned aversion to sodium saccharin. J. comp. physiol. Psychol. 75, 186–189 (1971).

    Google Scholar 

  • Cappell, H., LeBlanc, A. E.: Conditioned aversion to saccharin by single administrations of mescaline and d-amphetamine. Psychopharmacologia (Berl.) 22, 352–356 (1971).

    Google Scholar 

  • Davis, W. M., Babbini, M., Coussens, W. R., Smith, S. G., Crowder, W. F.: Inhibition of behavioral effects of morphine by α-methyltyrosine (AMT). Pharmacologist 13, 280 (1971).

    Google Scholar 

  • Davis, W. M., Babbini, M., Khalsa, J. H.: Antagonism by alpha-methyltyrosine of morphine induced motility in non-tolerant and tolerant rats. Res. Comm. cham. Path. Pharmacol. 4, 267–279 (1972).

    Google Scholar 

  • Davis, W. M., Smith, S. G.: Blocking of morphine based behavioral reinforcement by alpha-methyltyrosine. Life Sci. (in press).

  • Davis, W. M., Smith, S. G., Crowder, W. F.: Morphine based conditioned reinforcement. Paper presented to Fifth Int. Congr. Pharmacol., July 1972; abstracts of meeting, p. 52.

  • Dragoin, W., McCleary, G. E., McCleary, P.: A comparison of two methods of measuring conditioned taste aversions. Behav. Res. Meth. Instrum. 3, 309–310 (1971).

    Google Scholar 

  • Elsmore, T. F., Fletcher, G. V.: δ 9-Tetrahydrocannabinol: Aversive effects in rat at high doses. Science 175, 911–912 (1972).

    Google Scholar 

  • Garcia, J., Koelling, R. A.: A comparison of aversion induced by X-rays, drugs, and toxins. Radiat. Res., Suppl. 7, 439–450 (1967).

    Google Scholar 

  • Hargrave, G. E., Bolles, R. C.: Rat's aversion to flavors following induced illness. Psychon. Sci. 23, 91–92 (1971).

    Google Scholar 

  • Kayan, S., Woods, L. A., Mitchell, C. L.: Morphine-induced hyperalgesia in rats treated on the hot plate. J. Pharmacol. exp. Ther. 177, 509–513 (1971).

    Google Scholar 

  • Nachman, M.: Learned taste and temperature aversions due to lithium chloride sickness after temperal delays. J. comp. physiol. Psychol. 73, 22–30 (1970).

    Google Scholar 

  • Pickens, R., Harris, W. C.: Self-administration of d-amphetamine by rats. Psychopharmacologia (Berl.) 12, 158–163 (1968).

    Google Scholar 

  • Rozin, P., Kalat, J. W.: Specific hungers and poison avoidance as adaptive specializations of learning. Psychol. Rev. 78, 459–486 (1971).

    Google Scholar 

  • Siegel, S.: Nonparametric statistics for the behavioral sciences. New York: McGraw Hill 1956.

    Google Scholar 

  • Spector, S., Sjoerdsma, A., Udenfriend, S.: Blockade of endogenous norepinephrine synthesis by α-methyl-tyrosine, an inhibitor of tyrosine hydroxylase. J. Pharmacol. exp. Ther. 147, 86–95 (1965).

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

This research was supported in part by U.S. Public Health Service Grant MH 13570-03.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Coussens, W.R., Crowder, W.F. & Davis, W.M. Morphine induced saccharin aversion in α-methyltyrosine pretreated rats. Psychopharmacologia 29, 151–157 (1973). https://doi.org/10.1007/BF00422647

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00422647

Key words

Navigation